The expenditure of all funds shall conform to a spending plan approved by a court of competent jurisdiction of COAH in the event of a transfer thereto. Funds deposited in the Housing Trust Fund may be used for any activity approved in the spending plan to address the fair share obligation and may be set up as a grant or revolving loan program. Such activities include, but are not limited to, preservation or purchase of housing for the purpose of maintaining or implementing affordability controls, rehabilitation, new construction of affordable housing units and related costs, accessory apartment, market-to-affordable, or regional housing partnership programs, conversion of existing nonresidential buildings to create new affordable units, green building strategies designed to be cost saving and in accordance with accepted national or state standards, purchase of land for affordable housing, improvement of land to be used for affordable housing, extensions or improvements of roads and infrastructure to affordable housing sites, financial assistance designed to increase affordability, administration necessary for implementation of the housing element and fair share plan, or any other activity as permitted pursuant to N.J.A.C. 5:97-8.7 through 5:97-8.9 and specified in the approved spending plan.